JP2010194689A - Method for cutting film and cutter for the same - Google Patents

Abstract

In manufacturing a frameless module, a portion of a film laminated on a glass substrate that protrudes from an edge of the glass substrate is automatically cut.
When a wire 10 wound around a feeding roller 7 is wound around a winding roller 8 via a pair of current-carrying members 9, 9, a current is passed between the pair of current-carrying members 9, 9. The wire 10 between 9 is heated. And while moving the heated wire 10, it moves along the end surface of the glass substrate 111, and the part protruded from the edge of the glass substrate 111 of the film 114 laminated | stacked on the glass substrate 111 is cut | disconnected.
[Selection] Figure 3

Description

  The present invention relates to a film cutting method and a cutting apparatus for cutting a protruding portion of a weather-resistant film attached to one surface side of a glass substrate when manufacturing a solar cell module.

  Conventionally, as shown in FIG. 5, the solar cell module 100 is configured such that the periphery of the frameless module 110 is fitted into left and right vertical frames 101 and 102 and upper and lower horizontal frames 103 and 104 made of an aluminum extrusion molded product. 101 and 102 and horizontal frames 103 and 104 are screwed together.

  Here, as shown in FIGS. 6 and 7, the frameless module 110 includes a white plate reinforced glass plate (hereinafter referred to as a glass substrate) 111, a filler 112 made of a transparent resin, and a large number of solar cells in order from the light receiving surface side. It is formed by laminating a solar battery cell row 113 formed by connecting battery cells 113a in series or in parallel via an interconnector 113b, a filler 112 made of transparent resin, and a weather resistant film (hereinafter referred to as film) 114, An output terminal box 115 is attached to the back side (the film 114 side) of the frameless module 110, and an output cable 117 having a waterproof connector 116 is connected to the terminal box 115 (see, for example, Patent Document 1).

  When manufacturing such a frameless module 110, a solar cell array 113 is laminated on the upper surface of the glass substrate 111 via a filler 112, and a film having a larger vertical and horizontal dimension than the glass substrate 111 via the filler 112. 114 are laminated and heated and pressed to be integrated. Next, the protruding portion from the edge of the glass substrate 111 of the filler 112 and the film 114 laminated integrally on the upper surface of the glass substrate 111 is cut and removed (for example, see Patent Document 2).

JP 2003-64835 A JP-A-5-121772

  By the way, when a film is cut, an operator uses a heated special cutter blade. That is, since the film is opaque and the edge of the glass substrate cannot be accurately detected, the operator has to rely on manual cutting. For this reason, there was a problem that the production line of the frameless module could not be automated and the production efficiency was low. In addition, if the cutter blade cuts a film or the like and the cutting edge is worn and the sharpness is reduced, it is necessary to sharpen the cutter blade, which requires skill, requires a lot of time, and is complicated. There were also drawbacks.

  The present invention has been made in view of such problems, and can automatically cut a portion of a film laminated on a glass substrate that protrudes from an edge of the glass substrate when manufacturing a frameless module. A method for cutting a film and a cutting apparatus for the same are provided.

  In the method for cutting a film of the present invention, when winding the wire wound up by the feeding roller to the winding roller, a predetermined section of the wire is energized and heated, and the heated wire is wound on the end surface of the glass substrate. It moves along, and cut | disconnects the part which protruded from the edge of the glass substrate of the film laminated | stacked on the glass substrate.

  According to the present invention, when a wire wound around a feeding roller is wound around a winding roller, a certain section of the wire is energized and heated. And it moves along the end surface of a glass substrate, winding up the heated wire. Here, the heated wire is in contact with the film and is also in contact with the end surface of the glass substrate, and the temperature is lowered due to heat being taken away, but the temperature is lowered by being wound on the winding roller. At the same time that the wire is detached from the end surfaces of the film and the glass substrate, the wire heated to the set temperature is continuously supplied toward the film. Therefore, the film can be surely cut by the wire always heated to the set temperature.

  As a result, the part of the film laminated on the glass substrate that protrudes from the edge of the glass substrate can be continuously cut.

  In the film cutting method of the present invention, when a wire wound around each feeding roller is wound around a corresponding winding roller, a certain section of each wire is energized and heated, and a pair of heated wires are respectively heated. It is moved along each end face of two opposing sides of the glass substrate while winding, and simultaneously cuts off the portions protruding from the respective end edges of the two opposing sides of the glass substrate of the film laminated on the glass substrate. It is what.

  According to the present invention, when a wire wound around each feeding roller is wound around a corresponding winding roller, a certain section of each wire is energized and heated. And it moves along each end surface of 2 sides which a glass substrate opposes, respectively winding up a pair of heated wire. Here, each heated wire comes into contact with the film and also comes into contact with the end surface of the glass substrate, and heat is taken away to lower the temperature. At the same time that each lowered wire is detached from the end surfaces of the film and the glass substrate, each wire heated to the set temperature is continuously supplied toward the film. Therefore, the film can be surely cut by each wire always heated to the set temperature.

  As a result, the part of the film laminated on the glass substrate that protrudes from the two opposite edges of the glass substrate can be simultaneously and continuously cut.

  In the present invention, it is preferable that the energized wire in a certain section is positioned on the inner side of the set length from the end surface of the glass substrate and moved along the end surface of the glass substrate. Thereby, even if an error occurs in the positioning accuracy of the positioned glass substrate, the heated wire can be reliably brought into contact with the end surface of the glass substrate. Therefore, the heated wire can be moved along the end surface of the glass substrate in contact with the end surface of the glass substrate, and the portion of the film laminated on the glass substrate that protrudes from the edge of the glass substrate is glass substrate. It can cut reliably along the edge of the.

  The film cutting apparatus according to the present invention includes a feeding roller that winds a wire and a winding roller that winds the wire drawn from the feeding roller on a work table movable in two directions perpendicular to the plane with respect to the base. And a pair of energizing members that energize the wire in the path of the wire from the feeding roller to the take-up roller, and the pair of energizing members for the wire drawn from the feeding roller. After being wound around the take-up roller, the pair of energizing members are energized to heat the wire between the pair of energizing members, moved along the end surface of the glass substrate while winding the heated wire, and laminated on the glass substrate It cuts the part of the film that protrudes from the edge of the glass substrate. It is an.

  According to the present invention, when winding the wire drawn from the feeding roller to the take-up roller through the pair of energization members, the wire between the pair of energization members is continuously heated by energizing the pair of energization members. Can be supplied automatically. Therefore, the part which protruded from the edge of the glass substrate of the film laminated | stacked on the glass substrate can be cut | disconnected by moving along the end surface of a glass substrate, winding up the heated wire.

  As a result, a worktable movable in two directions perpendicular to the plane with respect to the base is provided with a wire feeding roller and a winding roller, and a simple pair of current-carrying members for energizing the wire is provided. According to the configuration, the part of the film laminated on the glass substrate that protrudes from the edge of the glass substrate can be continuously cut.

  In this invention, it is preferable that the said cutting device is each installed facing two sides which a glass substrate opposes. Thereby, the part which protruded from each edge of two opposite sides of the glass substrate of the film laminated | stacked on the glass substrate can be cut | disconnected simultaneously and continuously by the opposing cutting device, and cutting | disconnection work Efficiency can be improved.

  In the present invention, the energizing member is preferably a pulley made of a conductive material and energized carbon in contact with the pulley. That is, by adopting a pulley, the direction of the wire can be changed by winding the wire over an arbitrary angle in the circumferential direction. In addition, the use of energized carbon has the advantage that almost no wear occurs during rotation of the pulley, and adjustment work is not required.

  According to the present invention, when a frameless module is manufactured, a portion of the film laminated on the glass substrate that protrudes from the edge of the glass substrate can be automatically cut. Thereby, the manufacturing line of a frameless module can be automated and production efficiency can be improved.

It is a front view which shows one Embodiment of the cutting device of the film of this invention. It is a top view of the film cutting device of FIG. It is the schematic explaining the cutting procedure of the film cutting device of FIG. It is process drawing explaining the cutting method of the film of this invention. It is the top view, front view, and side view of a solar cell module. It is a disassembled perspective view which abbreviate | omits and shows a frameless module. It is the top view and front view of a frameless module.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show an embodiment of a film cutting device 1 of the present invention.

  The cutting device 1 includes a first moving table 4 that is movable in a front-rear direction (a direction orthogonal to the paper surface of FIG. 1) with respect to the base 2 via a linear bearing 3, and a left-right direction with respect to the first moving table 4. A second moving table 5 movable in the direction (left and right in FIG. 1) via the linear bearing 3, a work table 6 made of an insulating material fixed to the second moving table 5, an upper portion of the work table 6, and The feed roller 7 and the take-up roller 8 are rotatably supported at the lower part, and a pair of current-carrying members 9 provided at the upper and lower parts of the work table 6, respectively. The wire 10 is wound around the winding roller 8 through a pair of current-carrying members 9 and 9.

  Here, the energization member 9 includes a pulley 91 made of a conductive material, for example, steel, and an energization carbon 93 that is in contact with the side surface of the pulley 91 via an attachment arm 92 provided on the work table 6. A voltage set between the carbons 93 and 93 is applied. As a result, the wire 10 is energized via the current-carrying carbon 93 and the pulley 91 when passing through the pulley 91, so that the wire 10 is drawn out from the feed roller 7 and wound around the take-up roller 8 via the pair of current-carrying members 9, 9. When taken, a current due to voltage flows through the wire 10 between the pair of current-carrying members 9 and 9 and is heated to a set temperature by the resistance. That is, when the wire 10 is wound around the winding roller 8, the wire 10 is continuously heated to a set temperature between the pair of current-carrying members 9 and 9.

  At this time, since the work table 6 is formed of an insulating material, it is possible to prevent an electric shock caused by energization between the energization members 9 and 9.

  Further, the movement of the first moving table 4 in the front-rear direction with respect to the base 2 uses a timing belt and a servo motor (not shown), and the movement of the second moving table 5 in the left-right direction with respect to the first moving table 4 is illustrated. A single-axis robot that does not work is used.

  On the other hand, the feeding roller 7 is rotationally driven by a torque motor (not shown), and the take-up roller 8 is rotationally driven by a servo motor (not shown). When the winding roller 8 is rotated in the winding direction via the servo motor and the wire 10 is wound at the set speed, the torque motor is rotated in a direction opposite to the winding direction with a rotational torque smaller than the rotational torque of the servo motor. The brake is applied to the rotation of the feeding roller 7 in the feeding direction. Thereby, at the time of winding of the wire 10, the wire 10 can always be kept in a tension state and wound.

  The heating temperature of the wire 10 is set to about 200 ° C., although it depends on the thickness and material of the film 114 to be cut. The diameter of the wire 10 is preferably larger than 0.3 mm and smaller than 1.0 mm. When the diameter of the wire 10 is 0.3 mm or less, the heat capacity is insufficient, and it becomes difficult to continuously cut the film 114, and the tension acts in a heated state. It is likely to occur. On the other hand, when the diameter of the wire 10 is 1.0 mm or more, since the cut film 114 is melted and fused again, it is difficult to smoothly separate the film. Thereby, in the Example, the wire 10 with a diameter of 0.5 mm is used.

  Next, an operation procedure for cutting the film 114 using the thus configured cutting device 1 will be described with reference to FIGS.

  In addition, the cutting device 1 is installed facing left and right across a conveyance conveyor (not shown).

  First, although not shown in detail, the solar battery cell row 113 is laminated on the glass substrate 111 via the filler 112, and the film 114 having a larger vertical and horizontal dimension than the glass substrate 111 is laminated via the filler 112. Then, a semi-finished product (hereinafter referred to as a workpiece) W of the frameless module 110 in which these are integrated is transported to the position facing the cutting device 1 from the upstream side in the front-rear direction via the transport conveyor. When the workpiece W reaches the set position, the conveyance conveyor is stopped and positioned in the conveyance direction. Thereafter, a positioning member (not shown) is advanced toward the workpiece W from the left and right directions, and the workpiece W is sandwiched from the left and right directions so that the center in the width direction of the workpiece W is positioned on the center in the left and right direction of the conveyor. Position. When the workpiece W is positioned, the suction pad (not shown) is raised, and the workpiece W is sucked and fixed so as not to move in a state where the workpiece W is positioned in the front-rear direction and the left-right direction (see FIG. 4A).

  If the workpiece W is fixed, after the positioning member is retracted, the take-up roller 8 is rotated via a servo motor, and the feeding roller 7 is rotated by a brake via a torque motor, while a pair of Power is supplied between the current-carrying members 9 and 9. Thereby, the wire 10 wound around the feeding roller 7 is pulled out in a state where a certain tension is applied, and is wound around the winding roller 8 through the pair of current-carrying members 9 and 9. And when the wire 10 moves between a pair of electricity supply members 9 and 9, it receives the voltage which acts between the electricity supply members 9 and 9, and is heated to preset temperature.

  When the left and right worktables 6 are advanced toward the workpiece W in this state, the heated wires 10 are cut by cutting the film 114 protruding from the left and right end surfaces of the glass substrate 111 in the workpiece W. Then, they contact the left end surface and the right end surface of the glass substrate 111 in the workpiece W, respectively (see FIG. 4B).

  Here, by positioning the left and right end surfaces of the workpiece W by the positioning member described above, the left and right end surface positions of the glass substrate 111 in the workpiece W are grasped, and the left and right end surfaces of the glass substrate 111 are used as reference positions. The work table 6 is advanced so that the wire 10 is positioned on the inner side of the workpiece W by a set length as a reference position (see FIGS. 1 and 3). Thereby, even if a slight error occurs in the left and right end surface positions (reference positions) of the glass substrate 111 in the workpiece W detected by the positioning member, the wire 10 can be reliably brought into contact with the left and right end surfaces of the glass substrate 111. it can.

  Thereafter, when each work table 6 is moved to the downstream side in the conveyance direction of the workpiece W, each wire 10 moves along the left and right end surfaces while contacting the left and right end surfaces of the glass substrate 111 in the workpiece W, and the film 114 Among the portions protruding from the respective opposite edges of the two glass substrates 111, the downstream portion in the transport direction is cut and separated from the end position of the cutting (see FIG. 4C).

  At this time, the wire 10 comes into contact with the film 114 and also comes into contact with the end face of the glass substrate 111, so that heat is taken away and the temperature is lowered. It moves continuously from the member 9 toward the energizing member 9 below, and immediately comes off after contacting the end surface of the glass substrate 111 of the workpiece W and the film 114. That is, since the wire 10 is heated to the set temperature and continuously supplied, the film 114 can always be cut by the wire 1 heated to the set temperature. Therefore, the part which protruded from the right and left edge of the glass substrate 111 of the film 114 in the workpiece | work W can always be cut | disconnected with the wire 10 heated to preset temperature and supplied continuously, and the temperature of the wire 10 falls. It will not cause a situation that can not be cut.

  On the other hand, when the wire 10 comes into contact with the film 114 of the workpiece W and the end surface of the glass substrate 111, heat is taken away and the temperature decreases, so that the wire 10 whose temperature has decreased is wound around the winding roller 8.

  Next, each work table 6 is withdrawn, moved to the upstream side in the conveyance direction of the work W and returned to the cutting start position (see FIG. 4D), and then each work table 6 is advanced toward the work W again. Then, after each wire 10 is brought into contact with the left end surface and the right end surface of the glass substrate 111 of the workpiece W (see FIG. 4E), the work table 6 is moved to the upstream side in the conveyance direction of the workpiece W. Thereby, each wire 10 moved along the left and right end surfaces while contacting the left and right end surfaces of the glass substrate 111 in the workpiece W, and protruded from each of the two opposite edges of the glass substrate 111 of the film 114. Of the portion, the upstream portion in the conveyance direction is cut off from the end position of the cut. That is, the part which protruded from each right and left edge of the glass substrate 111 of the film 114 in the workpiece | work W can be cut | disconnected and cut | disconnected over a full length (refer FIG.4 (f)).

  If the part of the film 114 that protrudes from the left and right edges of the glass substrate 111 in the work W is cut, after the suction of the work W by the suction pad is released, the transport conveyor is driven to transport the work W downstream. The work W is rotated by 90 ° using the rotary table, and the transport conveyor is driven to transport the work W to the next work stage. In the next work stage, similarly, the work table 6 is advanced toward the work, and the heated wire 10 cuts the film 114 protruding from the new left and right edges of the glass substrate 111 of the work W. By separating, the workpiece W can be processed into the frameless module 110.

  When the cutting operation of the film 114 is completed in each work stage, the take-up roller 8 is reversely rotated via the torque motor using the time until the next work W is carried in. The wire 10 wound up is wound back on the feeding roller 7 and is again prepared for the film cutting operation of the next workpiece W.

  At this time, since the strength of the wire 10 that is heated and maintained in a tension state is reduced, repeated use of the wire 10 may cause unintentional cutting of the wire 10 during the cutting operation of the film 114. For this reason, when the wire 10 is rewound onto the feeding roller 7, the amount of rewound is limited to a certain percentage or less of the amount of the wire 10 wound around the winding roller 8, and a specific portion of the wire 10 is used more than the set number of times. It is preferable to prevent the wire 10 from being unintentionally cut.

  As described above, by moving the heated wire 10 along the end surface of the glass substrate 111 while continuously winding up, the portion of the film 114 that protrudes from the edge of the glass substrate 111 is heated to the set temperature. It can be continuously cut by the continuously supplied wire 10. Thereby, the cutting operation of the film 114 can be automated, the production line of the frameless module 110 can be automated, and the production efficiency can be improved.

  Further, even if a slight error occurs in positioning accuracy by moving the work table 6 so that the wire 10 enters the inner side of the glass substrate 111 by a set length from the state in which the wire 10 is in contact with the end surface of the glass substrate 111, The wire 10 can be reliably brought into contact with the end surface of the glass substrate 111, and the film 114 can be cut by moving along the end surface while being in contact with the end surface of the glass substrate 111. Therefore, the film 114 can be surely cut along the edge of the glass substrate 111, and the protruding portion of the film 114 does not remain, and the occurrence of reworking work can be prevented.

  Furthermore, by simultaneously cutting the portions of the film 114 that protrude from the left and right edges of the glass substrate 111, the film 114 that protrudes from the four sides of the glass substrate 111 can be cut and removed by two work stages. Therefore, the cutting time can be efficiently performed by shortening the working time.

  In the above-described embodiment, the steel pulley 91 and the current-carrying carbon 93 are used as the current-carrying member 9, but the pulley 91 is not necessarily used, and a fan-shaped guide may be used as long as the direction of the wire 10 can be changed. Further, there is no particular limitation as long as it is a conductive material other than the steel pulley 91 and the conductive carbon 93.

  Moreover, although the case where the part which protruded from each edge of two opposite sides of the glass substrate 111 of the film 114 in the workpiece | work W was cut | disconnected simultaneously was demonstrated, a film is used in each work stage using a rotary table, a conveyance conveyor, etc. 114, the portion protruding from each edge of the glass substrate 111 is cut one by one in turn, or the workpiece W is rotated by 90 ° on one work stage, and the portion protruding from each edge of the glass substrate 111 of the film 114 is You may make it cut | disconnect in order one by one.

DESCRIPTION OF SYMBOLS 1 Cutting device 6 Worktable 7 Feeding roller 8 Take-up roller 9 Current supply member 91 Pulley 93 Current supply carbon 10 Wire W Workpiece 111 Glass substrate 114 Film

Claims (6)

  When winding the wire wound around the feeding roller onto the winding roller, a certain section of the wire is energized and heated, moved along the end surface of the glass substrate while winding the heated wire, and laminated on the glass substrate A method for cutting a film, comprising cutting a portion of the film that protrudes from an edge of a glass substrate.   When winding the wire wound around each feeding roller to the corresponding winding roller, a predetermined section of each wire is energized and heated, and the glass substrate faces 2 while winding the pair of heated wires respectively. A method for cutting a film, wherein the film is moved along each end face of the side, and the portions of the film laminated on the glass substrate that protrude from the opposite edges of the two opposite sides of the glass substrate are simultaneously cut.   The method for cutting a film according to claim 1 or 2, wherein the wire in a certain section that is energized is positioned on the inner side of the set length from the end face of the glass substrate and is moved along the end face of the glass substrate. To cut the film.   A workbench that can move in two directions perpendicular to the plane with respect to the base, and a winding roller that winds the wire and a winding roller that winds the wire drawn from the feeding roller can be rotated via a motor. While providing a pair of current-carrying members that energize the wire in the path of the wire from the feed roller to the take-up roller, winding the wire drawn from the feed roller to the take-up roller via the pair of current-carrying members, Energizing the pair of energization members to heat the wire between the pair of energization members, moving along the end surface of the glass substrate while winding the heated wire, the edge of the glass substrate of the film laminated on the glass substrate An apparatus for cutting a film, characterized by cutting a portion protruding from the film.   5. The film cutting device according to claim 4, wherein the cutting device is installed facing two opposite sides of the glass substrate.   6. The film cutting apparatus according to claim 4, wherein the energizing member is a pulley made of a conductive material and energized carbon in contact with the pulley.

Images